load.html

来自「java类库详细讲解」· HTML 代码 · 共 149 行

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149 行

<HTML>
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<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<TITLE>Loading and Playing Sampled Audio
(Java Developers Almanac Example)
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<META CONTENT="Patrick Chan" NAME="AUTHOR">
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<A HREF="/">Home</A>
    &gt;
    <A HREF="../index.html">List of Packages</A>
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    <B><A HREF="../javax.sound.sampled/pkg.html">javax.sound.sampled</A></B><font color="#666666" SIZE="-2">
        &nbsp;[9 examples]
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            &nbsp;[3 examples]
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  <h3>
    e727.  
    Loading and Playing Sampled Audio</h3>

Supported audio file formats: aif, au, and wav.
See also <a href="../javax.sound.sampled/StreamAudio.html" class="eglink"><font size="-1"><b>e728</b> Playing Streaming Sampled Audio</font></a>.


<pre>
    try {
        // From file
        AudioInputStream stream = AudioSystem.getAudioInputStream(new File(<font color="#0066ff"><i>"audiofile"</i></font>));
    
        // From URL
        stream = AudioSystem.getAudioInputStream(new URL(<font color="#0066ff"><i>"http://hostname/audiofile"</i></font>));
    
        // At present, ALAW and ULAW encodings must be converted
        // to PCM_SIGNED before it can be played
        AudioFormat format = stream.getFormat();
        if (format.getEncoding() != AudioFormat.Encoding.PCM_SIGNED) {
            format = new AudioFormat(
                    AudioFormat.Encoding.PCM_SIGNED,
                    format.getSampleRate(),
                    format.getSampleSizeInBits()*2,
                    format.getChannels(),
                    format.getFrameSize()*2,
                    format.getFrameRate(),
                    true);        // big endian
            stream = AudioSystem.getAudioInputStream(format, stream);
        }
    
        // Create the clip
        DataLine.Info info = new DataLine.Info(
            Clip.class, stream.getFormat(), ((int)stream.getFrameLength()*format.getFrameSize()));
        Clip clip = (Clip) AudioSystem.getLine(info);
    
        // This method does not return until the audio file is completely loaded
        clip.open(stream);
    
        // Start playing
        clip.start();
    } catch (MalformedURLException e) {
    } catch (IOException e) {
    } catch (LineUnavailableException e) {
    } catch (UnsupportedAudioFileException e) {
    }
</pre>
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            &nbsp;Related Examples
        </font></td>
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e728. <a class="eglink" href="StreamAudio.html?l=rel">
    Playing Streaming Sampled Audio
</a>
<br>

e729. <a class="eglink" href="ContinuousPlay.html?l=rel">
    Continuously Playing a Sampled Audio File
</a>
<br>


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<br>
        See also: 
<a class="eglink" href="/egs/javax.sound.sampled/pkg.html?l=rel#Events">
    Events
</a>&nbsp;&nbsp;

<a class="eglink" href="/egs/javax.sound.sampled/pkg.html?l=rel#Properties">
    Properties
</a>&nbsp;&nbsp;

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